Latching mechanism for deployable/re-stowable columns useful in

Details Latching mechanism for deployable/re-stowable columns useful in Latching mechanism for deployable/re-stowable columns useful in

1984-05-02

1986-05-06

Lieberman, Eli

Communications: radio wave antennas

Antennas

With support for antenna, reflector or director

343DIG2, 52110, H01Q 128

Patent

active

045875260

ABSTRACT:
A column longeron latch assembly 72 provides the securing mechanism for the deployable, telescoping column 12 of a hoop/column antenna 10. Column 12 is an open lattice structure with three longerons disposed 120.degree. apart as the principle load bearing member and is deployed from a pair of eleven nested bays 22, 23 (FIG. 2) disposed on opposite sides of a center section 21 under the influence of a motor-cable-pulley system (FIGS. 3 and 4). Longeron latch 72 is a four bar linkage mechanism using the over-center principle for automatically locking the longeron sections into position during deployment and serves to unlock the sections when antenna 10 is to be re-stowed. A spring pack 61 disposed in an end of each longeron serves to absorb stress forces on the deployed column through the cam head piston and abutting latch from an adjacent longeron.

REFERENCES:
patent: 3278212 (1966-10-01), Kolb
patent: 3541566 (1970-11-01), Reibsamen
patent: 3688455 (1972-09-01), Zebuhr
patent: 4053177 (1977-10-01), Stammreich et al.
patent: 4062156 (1977-12-01), Roth
patent: 4176360 (1979-11-01), Leavy et al.
patent: 4183490 (1980-01-01), Montanarini
patent: 4212015 (1980-07-01), Graf et al.
patent: 4254423 (1981-03-01), Reinhard
patent: 4354193 (1982-10-01), Werner

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